3Selected Song

4Download Album

After clicking on the song, I was brought to this page for all songs on the album, with the choice to download all. You can also just click on any songs cloud icon at the right; doing so causes the cloud to fly down to the Download counter at bottom right. This step requires entering your Apple password. After the download is finished, the cloud icon changes to a grayed-out Downloaded button.

10Purchased Apps in iTunes 10.

11Books in iTunes

You can also download books bought on other devices. As you can see, I'm not much of an iBook user, but you can see what a purchased book not yet downloaded looks like. It's the one with the cloud icon.